#include <QApplication>
#include <QLabel>
#include <QString>

int main(int argc,char *argv[])
{
    QApplication app(argc,argv);
    QLabel* lable = new QLabel();
    QString message = QString::fromStdString("hello qt");
    lable->setText(message);
    lable->show();
    app.exec();
    return 0;
}